The invention relates to a slicing apparatus for slicing food products, in particular to a high-performance slicer, comprising a product feed that feeds products to be sliced on one or more tracks in a feed direction to a cutting region in which the products are cut into slices during a cutting operation of the slicing apparatus by means of a cutting blade, in particular a revolving and/or rotating cutting blade, that performs cutting movements; a portioning region in which portions are formed from the slices and each comprise one slice or a plurality of slices disposed at least partly above one another; and a control device that controls the cutting operation and that has operating information that relates to the cutting operation, wherein a treatment agent device for providing a liquid treatment agent is integrated into the slicing apparatus and is configured to provide the treatment agent during the cutting operation such that the treatment agent is applied to a respective cut surface of a product and/or to at least one respective flat side of at least one slice, and wherein a control unit is provided for the treatment agent device and is configured to control the operation of the treatment agent device in dependence on the cutting operation on the basis of at least a portion of the operating information of the control device.